Lock.



P. F- AUGENBRAUN.

LOCK.

APPLICATION FILED MAY a., 190s.

Patented Oct. 27, 1908.

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LOCK.

APPLICATION FILED MAY a. 1908.

Patented Oct. 27, 1908.

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UNITED sTATEs PATENT OEEIOE.

PETER E. AUe-ENERAUN, OE sTAMFoED, CONNECTICUT, Ass'IeNoR To THE YALE aTOwNE MANUFACTURING COMPANY, OF sTAMEOED, CONNECTICUT.

LOCK.

Specification of Letters Patent.

Patented Oct. 27, 1908.

To all whom it may concern:

Be it known that I, PETER F. AUGEN- BRAUN, of Stamford, in the county ofFairfield and State of Connecticut, have invented certain new and usefulImprovements in Locks; and I do hereby declare the following to be-afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to an improvement in locks, the object being toprovide improved means for attaching rim locks to doors, whereby all thesecuring screws are concealed.

With these ends in view my invention consists in the parts andcombinations of parts as will be more fully explained and pointed out inthe claims.

In the accompanying drawings7 Figure 1 is a view in elevation of asection of a door showing my improved lock attaching means, the spiderand attaching screws being shown in dotted lines. Fig. 2 is a view invertical section of same. Fig. 3 is a View on the line x-x of Fig. 1.Fig. 4 is a view on the line y--g/ of Fig. 1 and Fig. 5 is a view inplan and Fig. 6 a view in side elevation of the spider.

1 represents a door provided with a slot 2, Oblong in shape with roundedends, adapted to receive the lock attachments.

3 is a spider comprising a face plate 4 and a flange 5 the latter beingof a depth not greater than the thickness of the door, so as to permitthe lock 6a to rest solidly against the inner face of the door. The faceplate 4 is provided with projecting corners 6, rounded as shown, andprovided with holes for the passage of four screws 7, the latter passingthrough holes in the door and engaging internally threaded bosses 8 inthe lock case, thus securing the lock against the inner face of thedoor, and the face plate 4 to the outer face thereof. The flange 5 ofthe face plate is continuous as shown in dotted lines in Fig. 5, and isprovided midway its length with enlargements (shown in Fig. 4) havingholes for the passage of screws 8a. The screw holes are arranged atinclinations as shown, so as to enable the heads thereof to be readilengaged by a screw driver inserted throng the opening in the face plate4. The face plate is also provided intermediate the holes for the screws7 and the flange 5, with threaded holes with which the screws 10 engageand lock the escutcheon plate 11 to the front of the door thuscompletely concealing the spider 3 and the heads of screws 7, which asbefore explained pass through the face plate of the spider and throughthe door and old the lock 6 in place. The escutcheon plate 1 1 isprovided with cylindrical openings 12 for the passage of the keycylinders 13, and with an opening intermediate the openings 12 for thepassage of the knob spindle 13. One knob 14 is carried by the lockcasing 6 and the other by the escutcheon plate 11, and are connected bythe spindle 13 as shown in Fig. 2.

The key cylinder locks 13a are cylindrical as shown, and are providedwith screw threaded inner ends which engage threaded openings in theinner 'face of lock 6, hence it will be seen that when passed throughthe escutcheon late and spider to engage the lock 6, they a so assist insecuring the parts together and maintaining them in their )roperrelative positions. Before the key cylinders 13a are placed in position,the roses 14a are placed in position thereon, and when the cylinders 13aare screwed home, the roses which are then held against the escutcheonplate 11 by the flange 15 on the outer ends of the cylinder, cover andconceal the heads of the screws 10, which latter as before explainedconnect the escutcheon plate to the spider. After the cylinders havebeen properly placed, they are locked against withdrawal by the screws16 the ends of which engage the screw threaded ends of the cylinders 13aand prevent them from being rotated or unscrewed. The cylinder' locksare connected in the usual manner with the bolt operating' mechanism,and are used to open the door from the outside, when the outer knob isdeadlocked. By securing the parts of the lock attachments as describedall the securing screws are concealed and can only be reached by firstloosening up on the screws 16 which lock the key cylinders 13u in place,which screws are on the inside of the door, and then withdrawing thecylinders. The removal of the cylinders exposes the screws 10, and theremoval of the escutcheon plate exposes the screws 7. Again theemployment of a spider separating and supporting the lock and escutcheonplate, permits of the employment of the improvement not only on soliddoors of wood or metal, but also on illed doors, Where the interior iscomposed of a material too soit to support the lock.

It is evident that many slight changes might be resorted to in therelative arrangement of parts shown and described without departing fromthe spirit and scope of my invention hence I would have it understoodthat I do not wish to confine myself to the exact construction 'hereinshown and described, but,

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is

l. The combination with a door, of a frame or spider secured to one faceof the door, a lock bearing against the other face of the door, screwsconnecting the spider and the lock, an escutcheon plate covering thespider and secured thereto, and means held in place by the lockcylinders for covering and concealing the devices which secure theescutcheon plate to the spider.

2. The combination with a door, of a frame or spider secured to one facethereof, a lock resting against the other face of the door, screwsconnecting the spider and lock, an escutcheon plate covering` the spiderand secured thereto by screws, lock cylinders passing through theescutcheon and spider and into the lock, and roses carried by thecylinders and concealing the screws securing the escutcheon plate to thespider.

3. The combination of a spider, a lock, screws passing through thespider and engaging the lock, an escutcheon plate covering the spiderand concealing said screws, one or more other screws securing theescutcheon plate to the spider, one or more lock cylinders passingthrough the escutcheon plate and spider and engaging the lock, and rosescarried by the cylinders and concealing the screws which secure theescutcheon plate to the spider.

4. The combination of a face plate having a series of openin s throughsame, and a continuous outwarcy projecting rectangular ange, the latterhaving one or more screw holes arranged at an inclination, a lock,screws passing through the plate and engaging the lock, an escutcheonplate, covering saidv 'lirst mentioned plate and secured thereto byscrews, lock cylinders passing through the two plates and screwed to thelock, and roses carried by said cylinders and covering and concealingthe screws connecting the two plates.

In testimony whereof, l have signed this specification 1n the presenceof two subscribing witnesses.

PETER F. AUGENBRAUN.

TWitnesses J. A. GAYLOR, W7. H. TAYLOR.

